<%@ page language="java" import="java.util.*,java.util.Date,java.text.*,java.lang.*,java.sql.*,entity.*,util.*,dao.*"
	pageEncoding="utf-8"%>
	<%
Student s=(Student)session.getAttribute("login");
if(s==null){
	out.print("<script>alert('请登陆');location.replace('Studentlogin.jsp')</script>");
	return;
}

%>